51224612 has 12 divisors (see below), whose sum is σ = 90723696. Its totient is φ = 25303560.

The previous prime is 51224603. The next prime is 51224623. The reversal of 51224612 is 21642215.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76814 + ... + 77477.

It is an arithmetic number, because the mean of its divisors is an integer number (7560308).

Almost surely, 2^51224612 is an apocalyptic number.

It is an amenable number.

51224612 is a deficient number, since it is larger than the sum of its proper divisors (39499084).

51224612 is a wasteful number, since it uses less digits than its factorization.

51224612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154378 (or 154376 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 51224612 is about 7157.1371371520. The cubic root of 51224612 is about 371.3865965246.

Adding to 51224612 its reverse (21642215), we get a palindrome (72866827).

The spelling of 51224612 in words is "fifty-one million, two hundred twenty-four thousand, six hundred twelve".